Windows 10 Professional: Use Group Policy The only downside is that you have to remember the path for these new subkeys. Right-click on the “BlockExternalExtensions” subkey, select “New,” choose the “String Value” option, and set “1” as its value name.īy adding these two keys, you can ensure that no other user can install Chrome extensions from the Chrome Web Store or any other online source. Name this key “BlockExternalExtensions” without quotes.

Next, right-click the “Chrome” subkey again, and select New > Key. In the box under the Value data option, type in an asterisk (*), and click the “OK” button.

In the right-hand pane, double-click on the “1” value name to open its properties. Right-click on the “ExtensionInstallBlocklist” subkey, select “New,” choose the “String Value” option, and set “1” (without quotes) as its value name.